The Collaborative International Dictionary of English v.0.48:

Peccary \Pec"ca*ry\, n.; pl. Peccaries. [From the native South
   American name: cf. F. p['e]cari, Sp. pecar.] (Zool.)
   A pachyderm of the genus Dicotyles.
   [1913 Webster]

   Note: The collared peccary, or tajacu (Dicotyles
         torquatus), is about the size and shape of a small
         hog, and has a white ring aroung the neck. It ranges
         from Arkansas to Brazil. A larger species (Dicotyles
         labiatus), with white cheeks, is found in South
         America.
         [1913 Webster]

WordNet (r) 3.0 (2006):

peccary
    n 1: nocturnal gregarious pig-like wild animals of North America
         and South America [syn: peccary, musk hog]